The critical element seems to be the ability of modern TCAS systems to successfully cope with multiple TAs/RAs triggered by a plummeting aircraft (with compromised manoeuvring ability) in congested airspace without some degree of ATC coordination. In the seconds needed for ATCOs to respond to a 7700 squawk the max rate descender will have dropped through several FLs.
Last edited by Discorde; 22nd March 2026 at 09:04.
Reason: typo corrected